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Production records indicate that 1.5% of the light bulbs produced in a facility are defective. a random sample of 22 light bulbs was selected.
a) Use the binomial distribution to determine the probability that 2 defective bulbs are found.
b) Use the poisson approximation to the binomial distribution to determine the probability that 2 defective bulbs are found.
c) How do these two probabilities compare?
each main bearing cap in an engine contains four bolts. the bolts are selected at random without replacement from a
You have been asked to study the effects of an employee-wide training program, in a company of 500 employees, designed to reduce the amount of customer complaints.
Standard deviations differ, and speculate on the possible meaning of these differences, presuming that they are representative of U.S. governors and large corporations' CEOs in general.
Do the data indicate that the lengths of one supplier's 2x4's are subject to more variability than those of the other supplier? Assume α = 0.05. (HINT: F Test for Differences in Two Variances)
The main goal of correlation research is ______________
suppose x y and c represent the length width and perimeter of a flat rectangular sheet metal part. note that x is a
What is the probability that the total weight of eight people exceeds 1300 pounds? 1500 pounds? (Assume that the probability distribution is approximately normal).
What is the average rating for all CBC movies, and how about ABN movies and BBS movies
Let X be the number of tumors in a fish living in a river. Suppose that it has the following probability mass function f(0) = 0.9 f(1) = 0.7 f(2) = 0.02 f(3) = 0.01 A random sample of size n = 30 is selected from this population. Approximate the p..
A Tire company has developed a new type of tire. Extensive testing shows that the number of miles the new tire will run before wearing out is normally distrubuted with a mean of 40,000 miles and a standard deviation of 4,000 miles
An artifact is discovered at a certain site. If it has 46% of the carbon-14 it originally contained, what is the approximate age of the artifact to the nearest year?
find the numerical value of the following factors using a interpolation b the formula and c a spreadsheet function.1.
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